Selection criteria
SELECTING CRITERIA
Ballast resistor selection guide
5.
231
DDS
HARDWARE
Ref.1310
When using compact drive modules that integrate the power supply.
On compact drives “ACD/SCD/CMC 1.08 /1.15”, as opposed to the rest of
the compact models, do not install any external Ballast resistor. The inter-
nal one is enough, except on “SCD 1.15” models where it would be possi-
ble to install the internal resistor ER+TH-43/350 if the application so
required.
In general, on compact models “ACD/SCD/CMC 1.08/1.15” the internal
dissipation Ballast resistor will be enough, but if it is not in a particular sit-
uation, it is possible to install an external resistor of the same Ohm value
as the internal one and greater dissipation power.
On any compact drive whose reference is SCD...-NR no external Ballast
resistor will supplied with the unit. The user will place the order for the ex-
ternal resistor required by the application with a FAGOR representative.
MANDATORY. On all compact drives (except those whose reference is
SCD...-NR), the external resistor supplied with the units. ACD/SCD/CMC
1.08 /1.15 models are also an exception.
NOTE. Actually, the external resistor provided with the unit is considered
enough for most applications. If it is not enough, install one of the same
Ohm value and greater power.
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